Slow conversions of Number(x) columns with getLong()

JDK 1.3
WLS 5.1.0 / SP10
Solaris 8
Oracle Type 4 drivers - classes12.zip
I have thirty one threads like this one - only one is running (one cpu machine).
This is a getLong() on a Number(10) column. Will changing the column to Long
help?
Any ideas why this is slow/bottleneck?
I just discovered some OutOfMemoryErrors and will be fixing that.
"ExecuteThread-291" daemon prio=5 tid=0x6a3bb0 nid=0x132 waiting on monitor [0xd
b080000..0xdb0819e0]
at oracle.sql.NUMBER._isPositive(NUMBER.java:2882)
at oracle.sql.NUMBER._fromLnxFmt(NUMBER.java:2953)
at oracle.sql.LnxLibThin.lnxsni(LnxLibThin.java:871)
at oracle.sql.NUMBER.toLong(NUMBER.java:323)
at oracle.sql.NUMBER.longValue(NUMBER.java:1812)
at oracle.jdbc.dbaccess.DBConversion.NumberBytesToLong(DBConversion.java:181
7)
at oracle.jdbc.driver.OracleStatement.getLongValue(OracleStatement.java:3200
at oracle.jdbc.driver.OracleResultSetImpl.getLong(OracleResultSetImpl.java:3
35)
at oracle.jdbc.driver.OracleResultSet.getLong(OracleResultSet.java:1432)
Mike

http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=article&group=weblogic.developer.interest.jdbc&item=6829&utag=
ever have one of those days where you end up talking to yourself?
mike
"Mike Reiche" <[email protected]> wrote:
>
a developer tells me the code below works with type 4 drivers, but type
2 driver
complains about hte Oracle.Type.Cursor. What
type should that be? Will java.sql.Other work?
CallableStatement cstmt = con.prepareCall(callString);
cstmt.registerOutParameter(1, OracleTypes.INTEGER);
cstmt.setLong(2, 24);
cstmt.registerOutParameter(3, OracleTypes.CURSOR);
cstmt.execute();
rs=(ResultSet)cstmt.getObject(3);

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Message was edited by:
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                  , dbms_types.typecode_varchar2
                  , null
                  , null
                  , 10
                  , null
                  , null
      atyp.addattr( p_parm || '2'
                  , dbms_types.typecode_varchar2
                  , null
                  , null
                  , 10
                  , null
                  , null
      atyp.addattr( p_parm || '3'
                  , dbms_types.typecode_number
                  , 10
                  , 0
                  , null
                  , null
                  , null
    end if;
    atyp.endcreate;
    anytype.begincreate( dbms_types.typecode_table, rtype );
    rtype.SetInfo( null, null, null, null, null, atyp, dbms_types.typecode_object, 0 );
    rtype.endcreate();
    return odciconst.success;
exception
    when others then
      return odciconst.error;
end;
static function ODCITablePrepare( sctx out NColPipe, ti in sys.ODCITabFuncInfo, p_parm in varchar2, p_rows_req in number := 2 )
return number
is
    elem_typ sys.anytype;
    prec pls_integer;
    scale pls_integer;
    len pls_integer;
    csid pls_integer;
    csfrm pls_integer;
    tc pls_integer;
    aname varchar2(30);
begin
    tc := ti.RetType.GetAttrElemInfo( 1, prec, scale, len, csid, csfrm, elem_typ, aname );
    sctx := NColPipe( p_parm, p_rows_req, elem_typ, 0 );
    return odciconst.success;
end;
static function ODCITableStart( sctx in out NColPipe, p_parm in varchar2, p_rows_req in number := 2 )
return number
is
begin
    return odciconst.success;
end;
member function ODCITableFetch( self in out NColPipe, nrows in number, outset out anydataset )
return number
is
begin
    anydataset.begincreate( dbms_types.typecode_object, self.ret_type, outset );
    for i in self.rows_returned + 1 .. self.rows_requested
    loop
      outset.addinstance;
      outset.piecewise();
      if self.l_parm = 'one'
      then
        outset.setvarchar2( to_char( i ) );
      elsif self.l_parm = 'two'
      then
        outset.setvarchar2( to_char( i ) );
        outset.setvarchar2( 'row: ' || to_char( i ) );
      else
        outset.setvarchar2( 'row: ' || to_char( i ) );
        outset.setvarchar2( 'row: ' || to_char( i ) );
        outset.setnumber( i );
      end if;
      self.rows_returned := self.rows_returned + 1;
    end loop;
    outset.endcreate;
    return odciconst.success;
end;
member function ODCITableClose( self in NColPipe )
return number
is
begin
    return odciconst.success;
end;
end;
/And to use it
SQL> select * from table( NColPipe.show( 'test', 3 ) );
test1      test2           test3
row: 1     row: 1              1
row: 2     row: 2              2
row: 3     row: 3              3
SQL> select * from table( NColPipe.show( 'two', 5 ) );
one        two
1          row: 1
2          row: 2
3          row: 3
4          row: 4
5          row: 5
SQL> select * from table( NColPipe.show( 'one' ) );
one
1
2
SQL> Anton

How to generate report with dynamic variable number of columns?

How to generate report with dynamic variable number of columns?
I need to generate a report with varying column names (state names) as follows:
SELECT AK, AL, AR,... FROM States ;
I get these column names from the result of another query.
In order to clarify my question, Please consider following table:
CREATE TABLE TIME_PERIODS (
PERIOD     VARCHAR2 (50) PRIMARY KEY
CREATE TABLE STATE_INCOME (
     NAME     VARCHAR2 (2),
     PERIOD     VARCHAR2 (50)     REFERENCES TIME_PERIODS (PERIOD) ,
     INCOME     NUMBER (12, 2)
I like to generate a report as follows:
AK CA DE FL ...
PERIOD1 1222.23 2423.20 232.33 345.21
PERIOD2
PERIOD3
Total 433242.23 56744.34 8872.21 2324.23 ...
The TIME_PERIODS.Period and State.Name could change dynamically.
So I can't specify the state name in Select query like
SELECT AK, AL, AR,... FROM
What is the best way to generate this report?

SQL> -- test tables and test data:
SQL> CREATE TABLE states
2    (state VARCHAR2 (2))
3 /
Table created.
SQL> INSERT INTO states
2 VALUES ('AK')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('AL')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('AR')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('CA')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('DE')
3 /
1 row created.
SQL> INSERT INTO states
2 VALUES ('FL')
3 /
1 row created.
SQL> CREATE TABLE TIME_PERIODS
2    (PERIOD VARCHAR2 (50) PRIMARY KEY)
3 /
Table created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD1')
3 /
1 row created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD2')
3 /
1 row created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD3')
3 /
1 row created.
SQL> INSERT INTO time_periods
2 VALUES ('PERIOD4')
3 /
1 row created.
SQL> CREATE TABLE STATE_INCOME
2    (NAME   VARCHAR2 (2),
3      PERIOD VARCHAR2 (50) REFERENCES TIME_PERIODS (PERIOD),
4      INCOME NUMBER (12, 2))
5 /
Table created.
SQL> INSERT INTO state_income
2 VALUES ('AK', 'PERIOD1', 1222.23)
3 /
1 row created.
SQL> INSERT INTO state_income
2 VALUES ('CA', 'PERIOD1', 2423.20)
3 /
1 row created.
SQL> INSERT INTO state_income
2 VALUES ('DE', 'PERIOD1', 232.33)
3 /
1 row created.
SQL> INSERT INTO state_income
2 VALUES ('FL', 'PERIOD1', 345.21)
3 /
1 row created.
SQL> -- the basic query:
SQL> SELECT   SUBSTR (time_periods.period, 1, 10) period,
2            SUM (DECODE (name, 'AK', income)) "AK",
3            SUM (DECODE (name, 'CA', income)) "CA",
4            SUM (DECODE (name, 'DE', income)) "DE",
5            SUM (DECODE (name, 'FL', income)) "FL"
6 FROM     state_income, time_periods
7 WHERE    time_periods.period = state_income.period (+)
8 AND      time_periods.period IN ('PERIOD1','PERIOD2','PERIOD3')
9 GROUP BY ROLLUP (time_periods.period)
10 /
PERIOD             AK         CA         DE         FL
PERIOD1       1222.23     2423.2     232.33     345.21
PERIOD2
PERIOD3
              1222.23     2423.2     232.33     345.21
SQL> -- package that dynamically executes the query
SQL> -- given variable numbers and values
SQL> -- of states and periods:
SQL> CREATE OR REPLACE PACKAGE package_name
2 AS
3    TYPE cursor_type IS REF CURSOR;
4    PROCEDURE procedure_name
5       (p_periods   IN     VARCHAR2,
6        p_states    IN     VARCHAR2,
7        cursor_name IN OUT cursor_type);
8 END package_name;
9 /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY package_name
2 AS
3    PROCEDURE procedure_name
4       (p_periods   IN     VARCHAR2,
5        p_states    IN     VARCHAR2,
6        cursor_name IN OUT cursor_type)
7    IS
8       v_periods          VARCHAR2 (1000);
9       v_sql               VARCHAR2 (4000);
10       v_states          VARCHAR2 (1000) := p_states;
11    BEGIN
12       v_periods := REPLACE (p_periods, ',', ''',''');
13       v_sql := 'SELECT SUBSTR(time_periods.period,1,10) period';
14       WHILE LENGTH (v_states) > 1
15       LOOP
16         v_sql := v_sql
17         || ',SUM(DECODE(name,'''
18         || SUBSTR (v_states,1,2) || ''',income)) "' || SUBSTR (v_states,1,2)
19         || '"';
20         v_states := LTRIM (SUBSTR (v_states, 3), ',');
21       END LOOP;
22       v_sql := v_sql
23       || 'FROM     state_income, time_periods
24           WHERE    time_periods.period = state_income.period (+)
25           AND      time_periods.period IN (''' || v_periods || ''')
26           GROUP BY ROLLUP (time_periods.period)';
27       OPEN cursor_name FOR v_sql;
28    END procedure_name;
29 END package_name;
30 /
Package body created.
SQL> -- sample executions from SQL:
SQL> VARIABLE g_ref REFCURSOR
SQL> EXEC package_name.procedure_name ('PERIOD1,PERIOD2,PERIOD3','AK,CA,DE,FL', :g_ref)
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
PERIOD             AK         CA         DE         FL
PERIOD1       1222.23     2423.2     232.33     345.21
PERIOD2
PERIOD3
              1222.23     2423.2     232.33     345.21
SQL> EXEC package_name.procedure_name ('PERIOD1,PERIOD2','AK,AL,AR', :g_ref)
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
PERIOD             AK         AL         AR
PERIOD1       1222.23
PERIOD2
              1222.23
SQL> -- sample execution from PL/SQL block
SQL> -- using parameters derived from processing
SQL> -- cursors containing results of other queries:
SQL> DECLARE
2    CURSOR c_period
3    IS
4    SELECT period
5    FROM   time_periods;
6    v_periods   VARCHAR2 (1000);
7    v_delimiter VARCHAR2 (1) := NULL;
8    CURSOR c_states
9    IS
10    SELECT state
11    FROM   states;
12    v_states    VARCHAR2 (1000);
13 BEGIN
14    FOR r_period IN c_period
15    LOOP
16       v_periods := v_periods || v_delimiter || r_period.period;
17       v_delimiter := ',';
18    END LOOP;
19    v_delimiter := NULL;
20    FOR r_states IN c_states
21    LOOP
22       v_states := v_states || v_delimiter || r_states.state;
23       v_delimiter := ',';
24    END LOOP;
25    package_name.procedure_name (v_periods, v_states, :g_ref);
26 END;
27 /
PL/SQL procedure successfully completed.
SQL> PRINT g_ref
PERIOD             AK         AL         AR         CA         DE         FL
PERIOD1       1222.23                           2423.2     232.33     345.21
PERIOD2
PERIOD3
PERIOD4
              1222.23                           2423.2     232.33     345.21

Add column with row number to table

Hi,
to a table view I'd like to add a new column that contains the row number for each row.
I have many data sources (twelve) and with the union operator I create one output dataset. The output data is sorted by the arrangement of the input ports of the union operator.
Is there a way to add a column with its corresponding entry number?
Regards, FT

I have a similar question to the original post. It seems your answer will fill the new field in all rows with the same value. But, what if we want an actual row number?
I am simply looking to add a row number to a table. I only have one data source. The business scenario is that the output of the data service is sorted in descending order on value. I want to be able to select the first 10 (i.e. the top 10 items based on that value).
Even if I can solve my business scenario without using a row number field after the sort, it seems like a technique that would come in handy.
Any ideas? I'm pretty new to using Visual Composer so I may be missing something obvious.

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